PHYSA DISTORTA. 35 



OBSERVATIONS. 



Of this species, which occurs in Florida, I 

 have seen but the single specimen in Dr. Jay's 

 collection. * 



PHYSA DISTORTA, Bald. 



PLATE 5. FIGS. 1 3. 



P. tests, laevi, diaphana, albida perforata contorta et 

 transversa: anfractibus 3 convexis: sutura valde impressa: 

 apertura subrotundata. 



SYNONYMS AND REFERENCES. 



PHYSA (DIASTROPHA) DISTORTA^ HALD. This work, Oc- 

 tober, 1840. 



DESCRIPTION. 



SHELL transverse, short, translucent and um- 

 bilicated; composed of three very convex whirls, 

 and having a very deep suture: spire pointed, 

 shorter than the aperture, which is oval, and 

 almost cyclostomous, without any fold upon the 

 labium or columella. 



